Abolition the act of ending something in a legal way. It can be made illegal or no longer allowing it to exist. Abolish means to get rid of something legally.
"The Haitian government also helped Simon Bolivar in the wars to free the Latin American colonies from Spain. It did so in order to see slavery abolished in the liberated territories, although Bolivar did not always keep his promise of immediate abolition."
-- Michel-Rolph Trouillot, "The Haitian Revolution"
This is a picture of Ramón Emeterio Betances. He believed in the abolition of slavery. But the spanished ruled and he was sent to exile. He went to the Dominican Republic and then to New York. He was the main leader in the Grito de Lares. He died in Neuilly on September 18, 1898.